27399375511 has 4 divisors (see below), whose sum is σ = 27492889032. Its totient is φ = 27305861992.

The previous prime is 27399375499. The next prime is 27399375527. The reversal of 27399375511 is 11557399372.

27399375511 = T₁₃₅₂₉ + T₁₃₅₃₀ + ... + T₁₃₈₂₁.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27399375511 - 2²⁵ = 27365821079 is a prime.

It is a super-2 number, since 2×27399375511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27399375611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46756321 + ... + 46756906.

It is an arithmetic number, because the mean of its divisors is an integer number (6873222258).

Almost surely, 2^27399375511 is an apocalyptic number.

27399375511 is a deficient number, since it is larger than the sum of its proper divisors (93513521).

27399375511 is an equidigital number, since it uses as much as digits as its factorization.

27399375511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93513520.

The product of its digits is 1786050, while the sum is 52.

The spelling of 27399375511 in words is "twenty-seven billion, three hundred ninety-nine million, three hundred seventy-five thousand, five hundred eleven".